Hollow-axle wheel



30 1 held inl place thecotter pin 5. A bush JoH'NAF. Iaox,vo1af`scr..`Louis, MISSOURI, AssIGNoR lfroI soufrnnnn WEEL cvoivIPANYQ or t PatentedJuly 27, 1925; Y e

f rr1,593#969 "'sT. LOUIS,l MISSOURI, A CORPORATION or*v GEORGIA;A

HOLLOW-Axis lApplication l'ed September 22, 149,21. Serial No. 502,321;

i' My invention-relat'esto that type of axle trucks in which a hollowaxle is employed l tohold grease whichissupplied to an annular grooveinY the wheel bearing lthrough holes in the 'axle,and the annular groove.is also enlarged to serve as a supplemental reservo-ir for the greasefed frompthe hollow axle. f

The abject of. the invention is to provid@ bushingsfor the wheelswithout interfering with vthe feeding of the greaseland to furnish aconstruction in which the bushing bility of becoming loose or dislodged.

'In the drawi1`1gs:-y a f Figurel is a central, vertical 'sectionjof oneof the Vtruck wheels and the outer Vend of a hollow axle.

Figure 2` is a crosssection on the 'lines 2 2 of Figure y.l. l y I haveonly 'llustrated a portion of the axle of a truck as my invention can beapi plied to any of the Well known construc-` tionspofl trucks. f

The wheel 2,.With,` hub 3 is mountedto rotate on the fixed axle l andheld in pov sition by the washer 4 and cotter pin 5; To

hold the grease in the hollow axle, a steel VCup 6 is preferablyemployed which is also ing 7 preferablyof bronze, provided for l Vthewheel. This bushingis formed with an annular groove Si and in line withthis groo-ve a plurality of holes 9, preferably three, are formedthrough the axle,the

diameter of the holes inthe axle beingsome- 1 vwhat less than the `widthof the groove. Holes A'13 are also provided at the base of the grooveopening into the annular space 10 in the lhub of the wheel. y y f Inorder to hold the bushings. inthe wheels, a spiral groove 12 is formed.in the. hub and a bushing, of the diameter of the hub, and provided withthe groove and holes, as described, is slipped into the .hub

Vandv the bushing l.is then expanded until thel metal of the lbushing isforced into the spi- Y ral groove. `This is ac'oomplishe'dfby driv inginto the bushing afplurality ofv steel into the bearings.

at the` same` timeJthe internal diameter of the bushing,roriginally'thesame as the axle,y y I,

is rincreased so that the wheel linedwith the permanent bushing willslip easily over the faxleV The` diameter of the holes 9 ingroove,'andthe wheels having'some play bearing ofthe wheel, the A"grease is drawnbythe longitudinal play of the wheels into v the annular groove andthence distributed to .I

the bearing. Any surplus ofgrease `isfreceived yin the cavity in thehuby and ultimately linds its way throughthe `holes. 1,3 Having thusdescribed invention, whatl olaimas new and desire to secure` byLetters'Patent, is f f V1. The combination 'with a hollow axlev `for theholding of grease, ola wheel loosely 'mounted thereon andhaving'slightlo-ngitu-v ythe axle being less than the lwidth 'o-lthefybetween the washers 4 andthe inner thrust y f `dinal play,with l'aseparate bushing for the f `wheel of differentmetal froml the wheel hub,and means for locking thefbushingin.' the hub of the 1 wheel, thefjbushing pro# vided with an annular groove on theinside`l 'andwit-h'openings. into .said groove Jfrom the hollow axle, of' less,diameter than the width kof the groove, yfor the distribution of thegrease to the bearing.

2. The. combination w1 dinal play, with a vseparate lbushing for thehub, and means for looking thebushing'in the hub-ofthe wheel,comprisinga spiral groove in the hubof the wheel in which the bushinghas `.been expanded,the bushing yprovidedfwith an annular groove, andwith. openings into 'said groove from" the hollow axle, of less diameterthan the width of the groove, for the distribution of the grease to thebearing. A v

th a hollow axle u for the holding koi grease, ofa wheel' looselyv.mounted thereon and having slight longituoo .l p

dinal play, with a separate bushing for theA wheel of different metalfrom the Wheel hub. and means for looking the bushing in the huh of theWheel, the bushing provided with an annular groove on the inside andwith openings into said groove from the inside of the hollow axle, ofless diameter than the Width of the groove, for the distribution of thegrease to the bearing, with the Wheel hub provided with a, cavity Wit-l1openings thereinto leading to the openings in the bushing.

JOHN F. FOX.

